The Dell G15 5515 has the WMI interface (and WMI call returns) expected by the nvidia-wmi-ec-backlight interface. But the backlight class device registered by the nvidia-wmi-ec-backlight driver does not actually work. The amdgpu_bl0 native GPU backlight class device does actually work, add a backlight=native DMI quirk for this. Cc: Daniel Dadap <ddadap@xxxxxxxxxx> Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> --- drivers/acpi/video_detect.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 841f6213b4de..88acc09773bb 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -645,6 +645,16 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, }, + /* Models which have nvidia-ec-wmi support, but should not use it. */ + { + .callback = video_detect_force_native, + /* Dell G15 5515 */ + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), + DMI_MATCH(DMI_PRODUCT_NAME, "Dell G15 5515"), + }, + }, + /* * Desktops which falsely report a backlight and which our heuristics * for this do not catch. -- 2.37.3